CN220248369U - Vortex pump - Google Patents

Abstract

The utility model relates to a vortex pump, which solves the problems existing in the prior art and adopts the following technical scheme: the rotary pump comprises a pump body, a motor connected with the pump body through a connecting piece, an impeller arranged in the pump body, and a rotating shaft of the motor penetrates through the connecting piece and is connected with the impeller. The effect is that: the embedded ring is additionally arranged on the impeller, the end faces of the embedded ring are abutted to the matching surfaces of the adjacent components, so that gaps which are accurately controlled between the impeller surfaces on two sides of the impeller and the adjacent matching surfaces are improved, compared with the prior art, the gaps can be greatly reduced, the performance and the efficiency of the pump are improved, the requirements on the processing precision and the assembly precision of the impeller can be reduced, and friction between the impeller and the adjacent components is reduced when the impeller is used, so that noise is reduced.

Description

Vortex pump

Technical Field

The utility model relates to a vortex pump, in particular to a vortex pump for improving accurate control of gaps between wheel surfaces on two sides of an impeller and adjacent matching surfaces.

Background

The vortex pump comprises a pump body, a motor connected with the pump body through a connecting piece, an impeller arranged in the pump body, and a rotating shaft of the motor penetrates through the connecting piece to be in driving connection with the impeller. The vortex pump is generally suitable for applications where a high lift is required but the flow is relatively small. The vortex pump has higher requirements on the clearance of the impeller, mainly because the working principle of the vortex pump determines that a certain clearance is required to be kept between the impeller, the connecting piece and the pump body so as to form a vortex, and centripetal force is generated to press fluid into the outlet. If the impeller clearance is too small, the efficiency of the pump is reduced, and the problems of overload and energy consumption increase occur; the too large impeller clearance can lead to poor pumping capacity of the pump, reduced flow and even leakage, and shortens the service life of the pump. Therefore, proper impeller clearance is critical to the normal operation of the peripheral pump, and the clearance is generally controlled between 20 and 25 wires, so that the requirements on the processing precision and the assembly precision of the impeller are high, and the corresponding problems are as follows: the production and processing cost and the assembly cost are increased, the production and assembly period is prolonged, and the maintenance difficulty is high.

In addition, when the vortex pump works, the impeller rubs with the pump body and the connecting piece due to shaking, the impeller, the pump body and the connecting piece are all metal pieces, sharp noise is generated during friction, and noise pollution is generated. Therefore, reducing noise pollution is also an important task.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide the vortex pump, wherein the embedded ring is additionally arranged on the impeller and is abutted against the matching surfaces of the adjacent parts through the end surfaces of the embedded ring, so that the gap between the impeller surfaces at two sides of the impeller and the adjacent matching surfaces is accurately controlled, compared with the prior art, the gap can be greatly reduced, the performance and the efficiency of the pump are improved, the requirements on the processing precision and the assembly precision of the impeller are also favorably reduced, the production processing cost and the assembly cost are reduced, in addition, the friction probability between the impeller and the adjacent parts is reduced during use, the noise generated by friction is further reduced, and the adverse effect on the use environment is reduced.

The technical aim of the utility model is mainly solved by the following technical scheme: the utility model provides a volute pump, includes the pump body, through the connecting piece with pump body connected's motor sets up impeller in the pump body, the pivot of motor passes the connecting piece with impeller connection, its characterized in that the rim plate of impeller sets up a first concave ring respectively on both sides, set up the thimble in the first concave ring respectively, the outer terminal surface of thimble protruding in the surface of rim plate, the both ends face of thimble conflict respectively in the inner wall that the pump body corresponds and the inner wall that the connecting piece corresponds.

The improvement of the technical scheme mainly comprises that the embedded ring is additionally arranged on the impeller, the end faces of the embedded ring are abutted against the matching surfaces of the adjacent parts, and therefore gaps between the impeller surfaces on two sides of the impeller and the adjacent matching surfaces are accurately controlled, the processing precision and the assembly precision requirements of the impeller can be reduced, the production processing cost and the assembly cost are reduced, the friction probability between the impeller and the adjacent parts is reduced during use, noise generated due to friction is reduced, and adverse effects on the use environment are reduced.

In general, the embedded ring is made of PP plastic, in the preparation process, PP plastic is injected into the first concave ring, two end faces of the PP plastic are higher than wheel faces on two sides of the impeller, the amplitude of the PP plastic is 0.05-0.08mm, and the embedded ring is formed after the injected PP plastic is hardened.

When the vortex pump is used, the wheel faces of the two sides of the impeller made of the metal material are lower than the embedded rings made of the PP plastic material, and the impeller cannot directly rub the pump body and the connecting piece to generate screaming noise. Meanwhile, obvious noise is not generated when the PP plastic rubs with the pump body and the connecting piece, the part of the PP plastic, which is higher than the impeller surface, of the embedded ring is ground to be flat in a short time, and after the part of the PP plastic rubs to be flat, the impeller surface is automatically in clearance fit with the pump body and the connecting piece, so that the preparation precision and the assembly precision are greatly reduced when the impeller is prepared and assembled, the impeller surface, the pump body and the connecting piece are kept, and the performance and the efficiency of the pump are improved.

As a further improvement and supplement to the technical scheme, the utility model adopts the following technical measures: the gap between the first wheel surface on the wheel disc and the corresponding inner wall on the pump body is 0.05-0.08mm, the gap between the second wheel surface on the wheel disc and the corresponding inner wall on the connecting piece is 0.05-0.08mm, and the distances between the first wheel surface and the second wheel surface and the corresponding end surface on the embedded ring are all 0.05-0.08mm. The parts of the two ends of the embedded ring, which are ground flat, are equivalent to the clearance between the impeller wheel surfaces and the pump body and the connecting piece, namely the clearance between the impeller wheel surfaces on two sides of the impeller wheel surfaces and the pump body and the connecting piece, and the clearance is 0.05mm-0.08mm, and is the optimal clearance which can be automatically adjusted by the impeller wheel.

The novel wheel disc is characterized in that a first insert is arranged between the pump body and a first wheel surface on the wheel disc, a second insert is arranged between the connecting piece and a second wheel surface on the wheel disc, and two end surfaces of the embedded ring are respectively abutted to the first insert and the second insert. The technical scheme is that the first insert and the second insert are arranged in the vortex pump, the first insert and the second insert are made of stainless steel pieces or stainless materials, and the first insert and the second insert are arranged to avoid the situation that the impeller is rusted and can not rotate due to the fact that the impeller, the pump body and the connecting piece are rusted.

Preferably, the gap between the first insert and the first tread is 0.05-0.08mm, and the gap between the second insert and the second tread is 0.05-0.08mm.

Preferably, the first concave ring is arranged close to the root of the blade on the impeller, a first standing ring is arranged between the first concave ring and the root of the blade, the end face of the embedded ring protrudes from the end face of the first standing ring, and the distance between the end face of the embedded ring and the first standing ring is 0.05-0.08mm.

Preferably, a second concave ring is arranged on the wheel disc, the second concave ring is positioned on the inner side of the first concave ring, and a second standing ring is arranged between the second concave ring and the first concave ring. The arrangement of the second standing ring is beneficial to reducing the weight of the whole impeller and digested raw materials.

The wall thickness of the first standing ring is matched with the wall thickness of the second standing ring, and the wall thicknesses of the first standing ring and the second standing ring are smaller than the width of the first concave ring. In order to ensure that the first standing ring and the second standing ring are not too thin and too thick, but have proper thicknesses, the positioning and the limitation of the embedded rings are facilitated, the certain thicknesses are also beneficial to improving the certain wear resistance, and the problem that the gaps between the impeller wheel surface and adjacent parts are influenced as the embedded rings are worn together due to the fact that the first standing ring and the second standing ring are too thin and not wear-resistant is avoided.

Two flattening holes are formed in the second concave ring. The flattening holes are mainly used for balancing centrifugal force generated when the impeller rotates and component force of water pressure in the axial direction. The flow rates are balanced mutually in the axial direction through the liquid led out from the working surfaces of the blades at the central symmetrical positions of the wheel disc, so that deflection and vibration of the impeller are reduced, and the stability and service life of the impeller are improved. In addition, the two flattening holes can also play a role in cooling the impeller wheel disc, liquid is introduced from one side surface during rotation and is discharged from the other side after passing through the wheel disc, and the temperature rise in the running process of the impeller is effectively reduced.

The first concave ring is internally provided with a plurality of positioning grooves which are arranged at intervals, the embedded rings on two sides are formed into an integrated structure through connecting parts, and the connecting parts are respectively positioned in the corresponding positioning grooves. The setting of constant head tank is favorable to making the thimble stable fixed on the impeller, avoids the thimble rotation to shift or break away from on the impeller.

In order to facilitate production and processing and reduce stress generation, the positioning groove is of a kidney-shaped structure, two sides of the positioning groove are arc-shaped, the middle of the positioning groove is in a straight shape, and the positioning groove is distributed in a central symmetry mode by taking the axis of the impeller as the center.

The utility model has the beneficial effects that: 1. the embedded ring is additionally arranged on the impeller, and the end faces of the embedded ring are abutted against the matching surfaces of the adjacent parts, so that the gap between the impeller surfaces on two sides of the impeller and the adjacent matching surfaces is accurately controlled, the requirements on the processing precision and the assembly precision of the impeller can be reduced, and the production and processing cost and the assembly cost are reduced. 2. Compared with the prior art, the gap can be greatly shrunk, so that the performance and efficiency of the pump are improved. 3. When in use, the probability of friction between the impeller and the adjacent parts is reduced, so that noise generated by friction is reduced, and adverse effects on the use environment are reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a prior art to which the present utility model relates.

Fig. 2 is an enlarged schematic view of the portion a in fig. 1.

Fig. 3 is an enlarged schematic view of the B portion in fig. 1.

Fig. 4 is a schematic cross-sectional view of the present utility model.

Fig. 5 is an enlarged schematic view of the C portion in fig. 4.

Fig. 6 is an enlarged schematic view of the portion D in fig. 4.

Fig. 7 is a schematic view of an impeller according to the present utility model.

Fig. 8 is a schematic diagram of the sectional structure of G-G in fig. 7.

Fig. 9 is an enlarged schematic view of the H portion in fig. 8.

Fig. 10 is a schematic view of an impeller and thimble explosion condition in accordance with the present utility model.

Fig. 11 is a schematic view of a construction of the impeller of the present utility model without the thimble.

Fig. 12 is a schematic view of the sectional structure of E-E in fig. 11.

FIG. 13 is a schematic cross-sectional view of F-F in FIG. 11.

In the figure: 1. a pump body; 2. a coupling; 3. a motor; 4. an impeller; 5. a first concave ring; 6. a first insert; 7. a second insert; 8. a caulking ring; 9. a second concave ring; 10. a first standing ring; 11. a second standing ring; 12. flattening the hole; 13. a positioning groove; 14. a blade; 15. and a connecting part.

Detailed Description

The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.

Example 1: as shown in fig. 1-13, a vortex pump comprises a pump body 1, a motor 3 connected with the pump body 1 through a connecting piece 2, and an impeller 4 arranged in the pump body 1, wherein a rotating shaft of the motor 3 penetrates through the connecting piece 2 and is connected with the impeller 4, and the vortex pump is characterized in that two faces of a wheel disc of the impeller 4 are respectively provided with a first concave ring 5, embedded rings 8 are respectively arranged in the first concave rings 5, the outer end faces of the embedded rings 8 are protruded from the surface of the wheel disc, and two end faces of the embedded rings 8 are respectively abutted against the inner wall corresponding to the pump body 1 and the inner wall corresponding to the connecting piece 2.

The improvement of the technical scheme mainly comprises that the embedded ring 8 is additionally arranged on the impeller 4, the end faces of the embedded ring 8 are abutted against the matching faces of the adjacent parts, and the gaps between the impeller faces on two sides of the impeller 4 and the adjacent matching faces are accurately controlled, so that the requirements on the processing precision and the assembly precision of the impeller 4 can be reduced, the production processing cost and the assembly cost are reduced, the probability of friction between the impeller 4 and the adjacent parts is reduced when the impeller is used, noise generated due to friction is reduced, and adverse effects on the use environment are reduced.

In general, the embedded ring 8 is made of PP plastic, in the preparation process, PP plastic is injected into the first concave ring 5, two end faces of the PP plastic are higher than wheel faces on two sides of the impeller 4, the amplitude of the PP plastic is 0.05mm-0.08mm, and the embedded ring 8 is formed after the injected PP plastic is hardened.

When the vortex pump is used, the wheel faces of the two sides of the impeller 4 made of metal materials are lower than the embedded rings 8 made of PP plastic materials, and the impeller 4 cannot directly rub the pump body 1 and the connecting piece 2 to generate screaming noise. Meanwhile, no obvious noise is generated when the PP plastic rubs with the pump body 1 and the connecting piece 2, the part of the embedded ring 8, which is higher than the impeller surface of the impeller 4, rubs with the pump body 1 and the connecting piece 2 in a short time, and after the part of the embedded ring is worn down, the impeller surface of the impeller 4 is in clearance fit with the pump body 1 and the connecting piece 2 automatically, so that the preparation precision and the assembly precision are greatly reduced and can be maintained when the impeller 4 is prepared and assembled with the impeller 4, and the impeller surface of the impeller 4 has smaller clearance with the pump body 1 and the connecting piece 2, so that the performance and the efficiency of the pump are improved.

Further optimizing the previous technical scheme in detail, the clearance d between the first wheel surface on the wheel disc and the corresponding inner wall on the pump body 1 is 0.05-0.08mm, the clearance d between the second wheel surface on the wheel disc and the corresponding inner wall on the connecting piece 2 is 0.05-0.08mm, and the distances between the first wheel surface and the second wheel surface and the corresponding end surface on the embedded ring 8 are all 0.05-0.08mm. The parts of the two ends of the embedded ring 8 which are ground are equivalent to the clearance between the wheel surfaces of the impeller 4 and the pump body 1 and the connecting piece 2, namely the clearance between the wheel surfaces of the two sides of the impeller 4 and the pump body 1 and the connecting piece 2, and the clearance is 0.05mm-0.08mm, and the clearance is the optimal clearance which can be automatically adjusted by the impeller 4.

The distance from the end face of the embedded ring 8 to the wheel surface of the impeller 4 is further described in detail, the first concave ring 5 is arranged close to the root of the blade 14 on the impeller 4, a first standing ring 10 is arranged between the first concave ring 5 and the root of the blade 14, the end face of the embedded ring 8 protrudes from the end face of the first standing ring 10, and the distance between the end face of the embedded ring 8 and the first standing ring 10 is 0.05-0.08mm.

In order to reduce the weight of the impeller 4 and reduce raw materials consumed in the preparation of the impeller 4, a second concave ring 9 is arranged on the wheel disc, the second concave ring 9 is positioned on the inner side of the first concave ring 5, and a second standing ring 11 is arranged between the second concave ring 9 and the first concave ring 5. The second standing ring 11 and the first standing ring 10 are matched to clamp the embedded ring 8, and the end surfaces of the two sides of the second standing ring 11 and the first standing ring 10 are located on the same plane, so that the abrasion thickness of the two ends of the embedded ring 8 is kept to be the preset thickness (0.05-0.08 mm).

Further, the wall thickness of the first standing ring 10 and the wall thickness of the second standing ring 11 are adapted, and the wall thickness of the first standing ring 10 and the wall thickness of the second standing ring 11 are smaller than the width of the first concave ring 5. In order to ensure that the first standing ring 10 and the second standing ring 11 are not too thin or too thick, but have proper thicknesses, the positioning and limitation of the embedded ring 8 are facilitated, and the certain thicknesses are also beneficial to improving certain wear resistance, so that the problem that the gaps between the wheel surface of the impeller 4 and adjacent parts are influenced as the embedded ring 8 is worn together due to the fact that the first standing ring 10 and the second standing ring 11 are too thin and not wear-resistant is avoided.

For stable fixation of the caulking rings 8, a plurality of positioning grooves 13 are formed in the first concave ring 5 at intervals, the caulking rings 8 on two sides are formed into an integral structure through connecting portions 15, and the connecting portions 15 are respectively located in the corresponding positioning grooves 13. The cooperation of the positioning groove 13 and the connecting part 15 is beneficial to ensuring that the caulking ring 8 is stably fixed on the impeller 4, and preventing the caulking ring 8 from rotating and shifting or separating from the impeller 4.

In order to facilitate production and processing and reduce stress generation, the positioning groove 13 is of a kidney-shaped structure, two sides of the positioning groove 13 are arc-shaped, the middle of the positioning groove is in a straight shape, and the positioning groove 13 is distributed in a central symmetry manner with the axis of the impeller 4 as the center.

In addition, in order to improve the working stability and the service life of the impeller 4, the structure of the impeller 4 is further optimized: two flattening holes 12 are arranged in the second concave ring 9. The flattening holes 12 are mainly provided for balancing the centrifugal force generated when the impeller 4 rotates and the component force of the water pressure in the axial direction. In a central symmetrical position of the wheel disc, the flow rates of the liquid led out from the working surfaces of the blades 14 are balanced mutually in the axial direction, so that the deflection and vibration of the impeller 4 are reduced, and the stability and service life of the impeller 4 are improved. In addition, the two flattening holes 12 can also play a role in cooling the wheel disc of the impeller 4, liquid is introduced from one side surface during rotation and is discharged from the other side surface after passing through the wheel disc, and the temperature rise in the running process of the impeller 4 is effectively reduced.

Example 2: the difference between the present technical solution and the embodiment 1 is that the impeller 4 and the pump body 1 have a first caulking ring 8, and the impeller 4 and the connecting piece have a second caulking ring 8, which is as follows:

a first insert 6 is arranged between the pump body 1 and a first wheel surface on the wheel disc, a second insert 7 is arranged between the connecting piece 2 and a second wheel surface on the wheel disc, and two end surfaces of the caulking ring 8 are respectively abutted to the first insert 6 and the second insert 7. The technical scheme is that the first insert 6 and the second insert 7 are arranged in the peripheral pump, the first insert 6 and the second insert 7 are usually made of stainless steel or stainless materials, and the arrangement of the first insert 6 and the second insert 7 is used for avoiding the occurrence of the situation that the impeller 4 is rusted and can not rotate due to the rust of the impeller 4, the pump body 1 and the connecting piece 2.

Preferably, the gap between the first insert 6 and the first tread is 0.05-0.08mm, and the gap between the second insert 7 and the second tread is 0.05-0.08mm.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model. In the above-described embodiments, the present utility model is susceptible to various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a volute pump, includes pump body (1), through connecting piece (2) with motor (3) that pump body (1) are connected, set up impeller (4) in pump body (1), the pivot of motor (3) passes connecting piece (2) with impeller (4) are connected, its characterized in that two sides of the rim plate of impeller (4) set up respectively one concave ring (5), set up thimble (8) in first concave ring (5) respectively, the outer terminal surface of thimble (8) protruding in the surface of rim plate, the both ends face of thimble (8) contradict respectively in the inner wall that pump body (1) corresponds and the inner wall that connecting piece (2) corresponds.

2. The peripheral pump according to claim 1, characterized in that the clearance between the first tread on the wheel disc and the corresponding inner wall on the pump body (1) is 0.05-0.08mm, the clearance between the second tread on the wheel disc and the corresponding inner wall on the coupling (2) is 0.05-0.08mm, and the distances between the first tread and the second tread are both 0.05-0.08mm from the corresponding end face on the thimble (8).

3. The peripheral pump according to claim 1, characterized in that a first insert (6) is arranged between the pump body (1) and a first wheel surface on the wheel disc, a second insert (7) is arranged between the coupling piece (2) and a second wheel surface on the wheel disc, and two end surfaces of the insert ring (8) respectively abut against the first insert (6) and the second insert (7).

4. A peripheral pump according to claim 3, characterized in that the clearance between the first insert (6) and the first tread is 0.05-0.08mm and the clearance between the second insert (7) and the second tread is 0.05-0.08mm.

5. The peripheral pump according to any of claims 1-4, characterized in that the first concave ring (5) is arranged close to the root of the blade (14) on the impeller (4), a first standing ring (10) is arranged between the first concave ring (5) and the root of the blade (14), the end face of the embedded ring (8) protrudes from the end face of the first standing ring (10), and the distance between the end face of the embedded ring (8) and the first standing ring (10) is 0.05-0.08mm.

6. The peripheral pump according to claim 5, characterized in that a second concave ring (9) is provided on the wheel disc, said second concave ring (9) being located inside the first concave ring (5), a second standing ring (11) being provided between the second concave ring (9) and the first concave ring (5).

7. The peripheral pump according to claim 6, characterized in that the wall thickness of the first standing ring (10) and the wall thickness of the second standing ring (11) are adapted, the wall thickness of both the first standing ring (10) and the second standing ring (11) being smaller than the width of the first concave ring (5).

8. A peripheral pump according to claim 7, characterized in that two flattening holes (12) are provided in the second concave ring (9).

9. The peripheral pump according to any one of claims 1-4, characterized in that a plurality of positioning grooves (13) are provided in the first concave ring (5) at intervals, the embedded rings (8) on both sides are formed into an integral structure by connecting portions (15), and the connecting portions (15) are respectively located in the corresponding positioning grooves (13).

10. The peripheral pump according to claim 9, wherein the positioning groove (13) has a kidney-shaped structure, both sides of the positioning groove (13) are arc-shaped, the middle is in a straight shape, and the positioning groove (13) is distributed in a central symmetry manner with the axis of the impeller (4) as the center.